Every resource founders actually use, in one library.

What founders use most, ranked by how many answers lean on it.

1. Merge's founders sent hundreds of cold emails over six months, not to pitch but to understand who actually had the integrations... First Round Review Article · Starting Up Merge's Path to Product-Market Fit: The Importance of Founder-led Sales First Round Review
2. A solo founder documents exactly how cold email grew their product to real revenue over six months, including what changed in... Indie Hackers Thread · 5 min read · Starting Up The untapped power of cold email, your secret weapon Indie Hackers community
3. Close is a sales CRM built by working sales leaders, and this piece (reviewed by co-founder Steli Efti) draws the line between... Close Article · Starting Up 17 Best Cold Email Subject Lines for Higher Open Rates Kimberlee Meier
4. Braun sells cold email coaching for a living and this is his most-shared list, twenty-eight real subject lines with the... LinkedIn (Josh Braun) Thread · Starting Up 28 Cold Email Subject Lines That Get Opened Josh Braun
5. This one breaks the mechanics down further than the 28-line list, naming distinct patterns like the problem-focused question,... Josh Braun Article · Starting Up 9 Subject Lines That Motivated Prospects to Open Your Cold Email Josh Braun
6. This is the actual data behind one of the rules founders lean on: Boomerang analyzed over 300,000 emails and found all-caps... Boomerang Article · Starting Up The One Thing You Should Never Do In An Email Subject (Based on Data) Brendan G.
7. This is the source for the word-count guidance worth knowing before you draft. Boomerang's data, drawn from roughly 40 million... Boomerang Article · Starting Up 7 Tips for Getting More Responses to Your Emails (With Data!) Boomerang
8. Written for the exact founders who are about to cold email investors, so the advice is calibrated to your actual reader:... Hustle Fund (The Founder Playbook) Article · Starting Up Write Better Subject Lines Hustle Fund (The Founder Playbook)
9. A large, organized reference bank when you want more raw examples to riff on than the individual essays above give you. It is... Hunter.io Article · Starting Up 89 Effective Cold Email Subject Lines & How to Craft Them Hunter.io
10. A solo founder's first-hand accounting of what actually moved the needle after hundreds of real sends, useful because it... Indie Hackers Thread · Starting Up 800+ Cold Emails Later: Here's What Actually Moves the Needle Indie Hackers
11. Hunter Walk is a working VC who has actually funded companies off cold emails, so this comes with real skin in the game rather... Hunter Walk (Homebrew) Essay · Starting Up A Strong Cold Email Always Beats A Weak Warm One Hunter Walk (Homebrew)
12. This is a tightly reasoned section of a widely respected reference guide on venture capital, written for exactly your... Holloway Article · Starting Up Cold Emails (Raising Venture Capital guide) Holloway
13. This is the canonical essay on the psychology of fundraising, and it explains exactly why desperation kills your odds: 'there... Paul Graham Essay · Starting Up A Fundraising Survival Guide Paul Graham
14. This shows the real, full text of a cold email that turned into a $250,000 check from Mark Cuban, then a second $250,000 nine... Inc. Article · Starting Up Here's the Email Factmata's Founder Used to Get a $500,000 Investment From Mark Cuban Inc.
15. This free 83-page book from the founders of AngelList is the original modern text on distilling a startup into a message... Venture Hacks (Naval Ravikant & Babak Nivi) Book · Starting Up Pitching Hacks: How to Pitch Startups to Investors Venture Hacks (Naval Ravikant & Babak Nivi)
16. Written by the President of TDK Ventures, this is a sitting investor naming exactly what separates a disciplined cold email... TDK Ventures (Nicolas Sauvage) Essay · Starting Up The Cold Email VCs Want TDK Ventures (Nicolas Sauvage)
17. This piece pulls direct, attributed advice from named investors, including Jason Lemkin, Michael Seibel, and other operating... LeadLoft Article · Starting Up How to Cold Email Investors: 19 Tips From VCs & Angels LeadLoft
18. Visible builds tools for founder-investor communication, so this guide is oriented around what actually gets a reply rather... Visible.vc Article · Starting Up How to Cold Email Investors in 2026 (Templates + Tips) Visible.vc
19. Read the actual law once, at least the consent and notice sections, so you are not relying on someone else's paraphrase.... Ministry of Electronics and Information Technology (MeitY), Government of India Article · ~30 pages · Starting Up The Digital Personal Data Protection Act, 2023 (Official Text) Ministry of Electronics and Information Technology (MeitY), Government of India
20. Translates the DPDP Act's consent rules into what actually changes for a business, not a legal treatise. It is the piece to... India Briefing (Dezan Shira & Associates) Article · ~8 min read · Starting Up Understanding India's DPDP Consent Management Rules for Businesses India Briefing (Dezan Shira & Associates)
21. One paragraph of the actual regulation, the one that says direct marketing can count as a legitimate interest under GDPR. When... gdpr-info.eu Article · 1 page · Starting Up GDPR Recital 47: Legitimate Interest and Direct Marketing gdpr-info.eu
22. The regulator's own explanation of what a compliant commercial email looks like in the US, including the part founders skip:... Federal Trade Commission (FTC) Article · Starting Up CAN-SPAM Act: A Compliance Guide for Business Federal Trade Commission (FTC)
23. The UK regulator's own walkthrough of the three-part test (purpose, necessity, balancing) that decides whether you can cold... UK Information Commissioner's Office (ICO) Article · Starting Up When Can We Rely on Legitimate Interests? UK Information Commissioner's Office (ICO)
24. Written by a company that sells a cold email tool, so it is pragmatic rather than legalistic: what to put in your first email... Hunter.io Article · ~6 min read · Starting Up How to Do Cold Emailing After the GDPR Hunter.io

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